<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>promise面试题</title>
</head>
<body>
  
</body>
<script>
  console.log("Before enqueueing the microtask");
queueMicrotask(() => {
  console.log("The microtask has run.")
});
console.log("After enqueueing the microtask");
  Promise.resolve().then(() => {
      console.log(0);
      return Promise.resolve(4);
  }).then((res) => {
      console.log(res)
  })

  Promise.resolve().then(() => {
      console.log(1);
  }).then(() => {
      console.log(2);
  }).then(() => {
      console.log(3);
  }).then(() => {
      console.log(5);
  }).then(() =>{
      console.log(6);
  })

</script>
</html>